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LM3914N from NS,National Semiconductor

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LM3914N

Manufacturer: NS

Dot/Bar Display Driver

Partnumber Manufacturer Quantity Availability
LM3914N NS 12 In Stock

Description and Introduction

Dot/Bar Display Driver The LM3914N is a monolithic integrated circuit manufactured by National Semiconductor (NS). It is designed to sense analog voltage levels and drive a 10-segment LED display in either a bar graph or dot mode.  

### **Specifications:**  
- **Supply Voltage Range:** 3V to 25V  
- **Output Current per Segment:** 10mA to 30mA (adjustable)  
- **Reference Voltage Range:** 1.2V to 12V (adjustable)  
- **Input Voltage Range:** 0V to Vcc  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package Type:** 18-pin DIP (Dual In-line Package)  

### **Descriptions & Features:**  
- **LED Driver:** Drives 10 LEDs in either bar or dot mode.  
- **Adjustable Brightness:** Controls LED current via a single resistor.  
- **Low Standby Current:** Typically 6mA (independent of supply voltage).  
- **Internal Voltage Reference:** Provides stable operation with an adjustable range.  
- **Wide Input Range:** Can handle input voltages from ground to Vcc.  
- **No Multiplexing Required:** Each LED has an independent driver.  
- **Linear Scale:** LED brightness corresponds linearly to input voltage.  
- **Expandable:** Multiple LM3914N ICs can be cascaded for more segments.  

This IC is commonly used in battery level indicators, audio level meters, and other analog display applications.

Application Scenarios & Design Considerations

Dot/Bar Display Driver

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